Regioselective formation of medium-ring heterocycles of biological relevance by intramolecular cyclization

RSC Advances Pub Date: 2011-10-13 DOI: 10.1039/C1RA00494H

Abstract

This brief account describes our progress on the regioselective synthesis of medium-sized heterocycles. Formation of the medium-ring (seven-, eight-, nine-membered) oxa-, aza-, thia, oxa-thia- and aza-thia-heterocycles has been achieved by the intramolecular metal-mediated cyclization (especially Pd-catalyzed), diene and enyne metathesis, thiol-mediated cyclization, iodocyclization and azide-alkyne cycloaddition.

Graphical abstract: Regioselective formation of medium-ring heterocycles of biological relevance by intramolecular cyclization
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